c++ Using MAP with Explanation :)
1
class Solution
{
public:
int sumOfUnique(vector<int> &nums)
{
//using map
map<int, int> m;
for (int i = 0; i < nums.size(); i++)
{
m[nums[i]]++;
}
//finding sum of unique element
//means a element having 1 occurance only
int sum = 0;
for (int i = 0; i < nums.size(); i++)
{
if (m[nums[i]] == 1) sum += nums[i];
}
return sum;
}
};